This is an older version. The current version is 0.17.1. Ruff 0.17.1 · Released:
Installer files 0.15.2
| Architecture | Type | Scope | File size | Download | SHA256 |
|---|---|---|---|---|---|
| 64-bit | ZIP → Portable | — | — | github.com | VirusTotal |
| ARM64 | ZIP → Portable | — | — | github.com | VirusTotal |
| 32-bit | ZIP → Portable | — | — | github.com | VirusTotal |
Link and SHA256 come from the Windows Package Manager community manifest. Compare the hash of the downloaded file before running it.
Release notes
Released on 2026-02-19.
Preview features
- Expand the default rule set (#23385)
In preview, Ruff now enables a significantly expanded default rule set of 412
rules, up from the stable default set of 59 rules. The new rules are mostly a
superset of the stable defaults, with the exception of these rules, which are
removed from the preview defaults:
- `multiple-imports-on-one-line` (E401)
- `module-import-not-at-top-of-file` (E402)
- `module-import-not-at-top-of-file` (E701)
- `multiple-statements-on-one-line-semicolon` (E702)
- `useless-semicolon` (E703)
- `none-comparison` (E711)
- `true-false-comparison` (E712)
- `not-in-test` (E713)
- `not-is-test` (E714)
- `type-comparison` (E721)
- `lambda-assignment` (E731)
- `ambiguous-variable-name` (E741)
- `ambiguous-class-name` (E742)
- `ambiguous-function-name` (E743)
- `undefined-local-with-import-star` (F403)
- `undefined-local-with-import-star-usage` (F405)
- `undefined-local-with-nested-import-star-usage` (F406)
- `forward-annotation-syntax-error` (F722)
If you use preview and prefer the old defaults, you can restore them with
configuration like:
```toml
# ruff.toml
[lint]
select = ["E4", "E7", "E9", "F"]
# pyproject.toml
[tool.ruff.lint]
select = ["E4", "E7", "E9", "F"]
```
If you do give them a try, feel free to share your feedback in the GitHub
discussion!
- [flake8-pyi] Also check string annotations (PYI041) (#19023)
Bug fixes
- [flake8-async] Fix `in_async_context` logic (#23426)
- [ruff] Fix for RUF102 should delete entire comment (#23380)
- [ruff] Suppress diagnostic for strings with backslashes in interpolations before Python 3.12 (RUF027) (#21069)
- [flake8-bugbear] Fix B023 false positive for immediately-invoked lambdas (#23294)
- [parser] Fix false syntax error for match-like annotated assignments (#23297)
- [parser] Fix indentation tracking after line continuations (#23417)
Rule changes
- [flake8-executable] Allow global flags in uv shebangs (EXE003) (#22582)
- [pyupgrade] Fix handling of `typing.{io,re}` (UP035) (#23131)
- [ruff] Detect PLC0207 on chained `str.split()` calls (#23275)
CLI
- Remove invalid inline `noqa` warning (#23270)
Configuration
- Add extension mapping to configuration file options (#23384)
Documentation
- Add Q004 to the list of conflicting rules (#23340)
- [ruff] Expand `lint.external` docs and add sub-diagnostic (RUF100, RUF102) (#23268)
